Download b1habup0 - Citroens

B1HABUP0
MAINTENANCE : MAGNETI MARELLI 6LPB INJECTION SYSTEM
MOUNTING MAGNETI MARELLI AND INJECTION EW7A OR MOUNTING MAGNETI MARELLI AND
EW10A INJECTION
1. New vehicle preparation
CAUTION : The fault codes of all the vehicle ECUs must be erased at the pre-delivery inspection.
2. Diagnosis before repair
CAUTION : Before working on the engine, read the memories of the injection ECU.
CAUTION : Following a problem with the injection, it is essential that the injection ECU and automatic
gearbox ECU faults are read.
3. Recommendations/precautions
3.1. Vehicle with automatic transmission (engine version EW10A)
URGENT : After sales checks performed with the engine running should be carried out with gear " P"
engaged and the handbrake applied (except where explicitly mentioned otherwise in the repair
procedures).
3.2. Removing - refitting Injection electronic control unit
Removing the connectors from the ECU :

Retract the caliper

Disconnect the connectors of the ECU
Refitting the ECU connectors :

Tilting the caliper, insert the connector into the ECU

Lock carefully using the caliper
CAUTION : Do not exert force on the connector pins, when removing the injection ECU.
3.3. Replacing the injection ECU
CAUTION : Switching an injection ECU from one vehicle to another will make it impossible to start either
vehicle.
When replacing an injection ECU, the immobiliser system has to be initialised (See
"PROGRAMMING/MATCHING").
N.B. : See chapter : Replacing parts - Operations to be performed.
3.4. Non adjustable components
The motorised butterfly housing.
The TDC sensor.
Accelerator pedal sensor incorporated in the accelerator pedal.
Camshaft position sensor.
Ignition advance.
The engine idling speed.
The air fuel mixture (richness).
3.5. Oxygen sensor
CAUTION : Do not grease the sensor connector.
3.6. Knock sensor
Removing - Refitting : Observe the tightening torque (2 ± 0,5 m.daN).
3.7. Accelerator pedal sensor
The accelerator pedal sensor is incorporated in the accelerator pedal.
N.B. : The sensor is non-adjustable.
URGENT : Do not attempt to remove the sensor.
3.8. Motorised butterfly housing
URGENT : Do not attempt to adjust or dismantle a butterfly unit (safety).
3.9. Operations to be carried out following reconnection of the battery
Disconnecting the battery causes changes in the state of certain control units.
Consequences : The anti-scanning function (starting inhibition) is activated.
Operation to be performed : It is necessary to wait 1 minute after the reconnecton of the battery, before
starting the vehicle.
4. Function of the diagnostic tools
4.1. Generality
The diagnostic tool permits :

Identification of the injection ECU

Fault reading

Erasing the faults

Parameter measurements

The actuator test

Downloading the ECU program

Initialisation of the autoadaptive parameters

Configuring the ECUs
4.2. Identification of the computer
The ECU includes :

An identification label

An identification zone consisting of parameters that can be read by a diagnostic tool
Identification zone :

Supplier

System: type of ECU

Application

Version : Software version

Edition: modification state of the software version

Number: figure increases after each downloading of the ECU
4.3. Memorised faults
Access to the memorised fault codes is open to any technician who has a standard diagnostic tool
equipped with SCANTOOL, connected to the ECU (with the exception of "constructor" faults).
List of faults displayed by the diagnostic equipment :
Name of fault
Fault codes
Signal - Inlet manifold pressure sensor
P0106 - P0107 - P0108 - P0105
Signal - Air temperature sensor
P0112 - P0113 - P0110
Signal - Engine coolant temperature sensor
P0116 - P0117 - P0118 - P0115
Butterfly position sensor - 1 signal
P0122 - P0123 - P0120
Richness adjustment
P0130 - P0133
Signal - Upstream oxygen sensor
P0131 - P0132
Oxygen sensor heating control (upstream of the catalytic
P0135
converter)
Signal - Downstream oxygen sensor
P0137 - P0138 - P0139 - P0136
Oxygen sensor heating control (downstream of the catalytic
P0141
converter)
Fuel injection
P0170
Petrol injector N° 1 control
P0201 - P0262 - P0261
Petrol injector N° 2 control
P0203-P0268 - P0267
Petrol injector N° 3 control
P0204 - P0271 - P0270
Petrol injector N° 4 control
P0202 - P0265 - P0264
Accelerator pedal sensor ; Incoherence of signals 1 and 2
P0221
Accelerator pedal sensor ; 1 signal
P0222 - P0223 - P0220
Accelerator pedal sensor ; 2 signal
P0227 - P0228 - P0225
Ignition misfiring on more than one cylinder or cylinder
P0300
unknown
Ignition misfiring (cylinder n°1)
P0301
Ignition misfiring (cylinder n°2)
P0302
Ignition misfiring (cylinder n°3)
P0303
Ignition misfiring (cylinder n°4)
P0304
List of faults displayed by the diagnostic equipment :
Signal - Knock sensor
P0326 - P0327 - P0329 - P0325
Signal - Engine speed sensor
P0336 - P0338 - P0335 - P0339
Cylinder reference sensor 1
P0341
Ignition coil 1 control
P0351
Ignition coil 2 control
P0352
Ignition coil 3 control
P0353
Ignition coil 4 control
P0354
Air pump relay control
P0413 - P0414 - P0412
Catalytic converter ageing
P0420
Fuel vapour recycling
P0440
Canister purging electrovalve control
P0444 - P0445 - P0443
GMV operated at fast speed : 1 electric cooling fan unit (relay) P0480
GMV operated at fast speed : 2 electric cooling fan unit (relay) P0481
Signal - Vehicle speed sensor
P0502 - P0503 - P0500
Air conditioning pressure
P0532 - P0533
Power steering stop information
P0551 - P0553
Battery voltage
P0562 - P0563 - P0560
Cruise control switch information
P0568
Petrol injection ECU
P0606 - P1152 - P0601
Butterfly position check
P1161
Butterfly position incoherence ; Track N°1 / pressure
P1133 (*)
Butterfly position incoherence ; Track N°2 / pressure
P1134 (*)
Inlet manifold
P1160 (*)
Control - Motorised butterfly housing
P1150 (*) - P1151 (*) - P1154 (*) - P1155
(*)
Motorised throttle ; Incoherence of signals 1 and 2
P0121
Initialisation of the butterfly stops
P1153 (*)
Butterfly position sensor ; 2 signal
P1157 (*) - P1158 (*) - P1156 (*)
Cooling fan status
P1507 (*) - P1519 (*) - P0483 - P0485
Coded engine immobiliser generation 2
P1612 (*)
Fault internal to the engine management ECU
P1617 (*) - P1631 (*)
System fault
P1621 (*)
List of faults displayed by the diagnostic equipment :
Sensor supply
P0608 - P0609
GMV operated at fast speed : 1 electric cooling fan unit (relay) P0480
GMV operated at low speed : 2 electric cooling fan unit (relay) P0481
The engine ECU no longer communicates on the network
U1000
Engine ECU supply
P1601 - P0215
Remote Controlled Wake-Up (RCD) : Main wake-up fault
U2000
Remote Controlled Wake-Up (RCD) : Partial wake-up fault
U2118
Remote Controlled Wake-Up (RCD) : Incoherence between
U2003
main wake-up and electrical signal
Pressure / butterfly position not coherent
P0105
Piloted Alternator mechanics
P1674
Piloted Alternator electrics
P1675
Communication with the piloted alternator
P1676
Piloted thermostat control
P0597 - P0598 - P0599
Accelerator pedal point of resistance information (Speed
P1614 - P1645 - P1643 - P1644
Limiter)
ECU not downloaded
P0602
Engine running information
P1657 - P1656 - P1655
Electric fuel gauge
P250C - P250D - P250B
Configuration
P1613
Cruise control
P1671
Speed limiter
P1607
Dialogue with the Stop and Start ECU
U1103 - U1203
Fuel gauge
P0461 - P0463 - P0462
Non coherence between the 2 stop switches
P0571
Variable timing electrovalve
P1148 - P0075 - P1149 - P0076 -P0077 P0012 - P0011 - P0010*
Incoherence between inlet pressure and butterfly angle
P1622 (*)
information
Engine torque delivered
P1623 (*)
Incorrect ESP demand
P1624 (*) - P1625 (*)
Incoherent information relating to the automatic gearbox
P1626 (*)
Non respect of the torque demanded by the driver
P1627 (*)
List of faults displayed by the diagnostic equipment :
Incoherent information from the brake switch or accelerator
P1628 (*)
pedal sensor
Incoherence between calculated mechanical friction and
P1629 (*)
actual friction
Incoherent cruise control demand
P1630 (*)
No communication on the network
U1003 (*)
Dialogue with ABS or ESP
U1113 (*) - U1213 (*)
Dialogue with the BSI
U1118 (*) - U1218 (*)
Dialogue with the automatic gearbox
U1209 (*) - U1109 (*)
(*) "constructor" faults
N.B. : "GMV" : cooling fan unit.
4.4. Contexts associated with the faults
The ECU memorises the following information when recording a fault.
Data
Remarks
Fault no.
PXXXX or UXXXX
Vehicle speed
(km/h)
Engine speed
Engine speed (rpm)
Engine coolant temperature
Engine coolant temperature (°C)
Pressure in the inlet manifold
Air pressure in the inlet manifold (mbar)
State : Richness adjustment
Open loop (conditions for changing to closed loop not satisfied)
Closed loop
Open loop (particular driving conditions)
Open loop (malfunctioning)
Closed loop but malfunctioning on an oxygen sensor
4.5. Deletion of manufacturer and EOBD fault codes - Background
Faults are erased (after fault codes have been read) with the ignition on and engine off.
It is necessary to inform after-sales on each occasion the memorised fault codes are deleted.
This signature is of the same type as that which is stored in the ECU's identification zone at the time of
downloading.
This information can be viewed in the fault "history" ; Using the diagnostic tool :

Total count of number of repairs

Date of repair

Vehicle mileage at the time of repair

Diagnostic tool used in repair

Place of repair

Type of deletion
Total count of number of repairs : This information is used to monitor the number of repairs carried out on
the vehicle.
This information permits checking of the type of tool used for the fault code erasing operation, in order to
know whether the operation was carried out within the network or by an independent repairer.
5. Measure parameters
The diagnostic tools permit the following parameters to be displayed.
Parameter
Parameter
Comments
status
Engine speed
-
At idle = 700 rpm
At idle with air conditioning = 800 rpm
Battery voltage
In volts
The battery voltage measured by the engine injection ECU
should be between 12 and 14 Volts
Injection time
Milliseconds
Motor running at idle (700 rpm) : Duration of the injection of
petrol in milliseconds = 3,9 to 4,04 ms
Engine at idle with air conditioning (800 rpm) : Duration of the
injection of petrol in milliseconds = 5,18 to 5,5 ms
Engine running free of load (3000 rpm) = 3,55 to 3,62 ms
Injection cut-off on
-
Status of the injection cut-off. It occurs on deceleration
(°C)
Temperature between 88 and 108 °C
deceleration
Engine coolant
temperature
Upstream oxygen
In volts
sensor voltage
In open loop : The voltage supplied by the upstream sensor
should be fixed and between 0,1 and 1 volt
In closed loop : The voltage supplied by the upstream sensor
should fluctuate between 0,1 and 1 volt
Downstream oxygen
In volts
sensor voltage
In open loop : The voltage supplied by the downstream sensor
should be fixed and between 0,1 and 1 volt
In closed loop : The voltage supplied by the downstream sensor
should fluctuate very slightly and be between 0,1 and 1 volt
Richness regulation
Open loop
In open loop : The ECU does not regulate the richness
Closed loop
In closed loop : The ECU regulates the richness
status
5.1. Actuator test
The diagnostic tool is used to test the following actuators :

Motorised butterfly housing (maximum opening, closing)

Petrol injectors (1 to 4)

Petrol pump relay

Canister purge electrovalve

Upstream oxygen sensor heater

Downstream oxygen sensor heater

Cooling fan (fast speed control, slow speed control)

HT coils cylinder 1 - 4 (engine EW10 )

HT coils cylinder 2 - 3 (engine EW10 )
URGENT : The ignition coil control test must be performed before the injector control test.
5.2. Downloading - Generality
This ignition injection ECU is equipped with a "FLASH-EPROM" memory.
Special feature of memory " FLASH-EPROM" :

This type of memory permits, in the case of a change in calibration, the memory of the ECU to be
modified without remove or replacing the ECU

Instead of replacing the ECU or the eprom, the operation consists in "downloading" the ECU
program into its memory, using an appropriate after sales tool, through the diagnostic socket
5.3. Downloading - Operations to be carried out
Before attempting the download procedure, ensure that the battery is fully charged to prevent the process
from being aborted.
CAUTION : Closely follow the instructions provided by the diagnostic tool.
The diagnostic tool authorises downloading if the following conditions are met :

The download file version is the same as the version of the software stored in the ECU

The edition is later than the edition of the software stored in the ECU
After a downloading operation :

Enter the date of the download procedure (day, month, year)

Enter the dealer account number ("signature") into the downloading equipment
( *) The dealer identity is the account number for your dealership.
CAUTION : A high voltage will cause the downloading process to halt.
N.B. : It is possible to restart a downloading procedure after a procedure failure (example, battery voltage
insufficient).
N.B. : See chapter : Replacing parts - Operations to be performed.
5.4. Initialising the autoadaptive parameters (recentring of the auto-adaptives)
The system possesses autoadaptive parameters for the following functions :

Richness adjustment

Adjustment of idling speed

Knock regulation

Initialisation of the butterfly stops

Initialisation of the EGR electrovalve stops
These parameters vary according to the age of the engine.
The autoadaptive corrections are memorised by the injection ECU, so they have to be reinitialised after
certain components of the system are changed.
N.B. : See chapter : Replacing parts - Operations to be performed.
From the diagnostic tool menus, select :

"DIAGNOSIS"

Select the vehicle

Enter the vehicle's RPO N°

After the global test, select : Injection ECU

Select the system

Select "INITIALISATION OF THE AUTO-ADAPTIVES"
6. Replacing parts : Operations to be performed
6.1. Diagnosis before repair
CAUTION : Before working on the system, read the memories of all ECUs.
Refer to the fault finding charts :

Fault charts using fault codes

Fault charts using customer complaints
6.2. Prior or additional operations to be carried out in the event of changing components
CAUTION : Before adding or replacing any parts, ensure that the customer has not lost their confidential
card.
Operations
Operations to be carried out
Remarks - Information
required
Deletion of manufacturer
Procedure : Initialising the autoadaptive
(if no repairs are carried out
and EOBD fault codes
parameters - Recentring of autoadaptives
on the vehicle, do not initialise
the auto-adaptives)
Replacement : Injection
1) Procedure :
Access code (written on the
ECU
"PROGRAMMING/MATCHING" Matched with customer's confidential card)
the BSI
2) Procedure : Configuring the ECU
3) Procedure : Initialisation of an engine
management ECU
Downloading to the injection Procedure : Initialisation of an engine
Duration - Downloading :
ECU
Approx. 50 minutes
management ECU
Replacement : Downstream 1) Procedure : Initialising the autoadaptive
oxygen sensor
parameters - Recentring of autoadaptives
Replacement : Upstream
2) Procedure : Initialisation of an engine
oxygen sensor
management ECU
Replacement : Knock
-
sensor
-
Replacement : Motorised
Procedure : Initialisation of an engine
butterfly housing
management ECU
Replacement : Accelerator
Without accelerating, start the engine and
pedal sensor
allow it idle
Replacement : Motorised
Procedure : Initialisation of an engine
butterfly housing +
management ECU
-
-
-
Accelerator pedal sensor
Decreased fuel consumption :

Procedure : "PROGRAMMING/MATCHING" Matched with the BSI

Downloading to the injection ECU

Procedure : Initialising the autoadaptive parameters (Recentring of autoadaptives)
6.3. Procedure : "PROGRAMMING/MATCHING" Matched with the BSI
CAUTION : Swapping an injection ECU between two vehicles makes it impossible to start the vehicles.
When replacing an injection ECU, the immobiliser system has to be initialised.
Requirements for initialising the immobiliser system :

Be in possession of the access code to the built-in systems interface (written on the customer's
confidential card)

Ensure you have a new injection ECU

Use the diagnostic tool

Initialise the engine ECU

Download to the injection ECU
6.4. Procedure : Configuring the ECU
URGENT : To effect the configuration of the ECU, refer to the "INFO'DIAG" bulletins.
CAUTION : The configuration should be carried out according to the definition of the vehicle.
Functions to be configured into the injection ECU (as a guide) :
Function
Remarks
Function : Cooling requirement for the air conditioning (BRAC)
Air conditioning pressostat
(integrated in the injection ECU)
Function : Engine cooling
Cooling fan type (number of speeds,
chopper)
Alternator class
Class of alternator fitted on the engine
Functions to be configured into the injection ECU (as a guide) :
(7 to 15)
Variations : Electrical architecture
Vehicle with ESP
Vehicle equipped with ABS
Vehicle equipped with a power steering
pressure switch
Vehicle equipped with the speed limiting
function (*)
Vehicle equipped with cruise control
Function to be made available on a progressive basis.
CAUTION : Certain functions have to be configured in the BSI.
6.5. Downloading
Downloading must be carried out with the engine cold (engine coolant temperature lower than 60°C).
Duration - Downloading : Approx. 50 minutes (6LP).
After downloading, carry out the following operations :

When downloading is complete, wait 10 seconds before switching off the ignition (initialisation of
the throttle stops)

Switch off the ignition

Perform an initialisation of an engine management ECU Procedure : Initialisation of an engine
management ECU
6.6. Deletion of manufacturer and EOBD fault codes - Background
If the faults are cleared following the repair of a failure detected by reading the faults : Initialise the autoadaptives after clearing the faults (if no repairs are carried out on the vehicle, do not initialise the autoadaptives). Procedure : (initialisation of the auto-adaptives - recentring of the auto-adaptives).
6.7. Procedure : (initialisation of the auto-adaptives - recentring of the auto-adaptives)
It is necessary to recentre the autoadaptives if performing one of the following operations :

Replacement : Downstream oxygen sensor

Replacement : Upstream oxygen sensor

Replacement : Knock sensor

Deletion of manufacturer and EOBD fault codes (if no repairs are carried out on the vehicle, do
not initialise the auto-adaptives)
6.8. Procedure : Initialisation of an engine management ECU
CAUTION : The procedure must be carried out with the engine cold (engine coolant temperature lower
than 60°C) (switch the air conditioning off).
Perform the following operations :

Switch on the ignition

Operate the starter briefly and switch the ignition off

Wait 2 minutes - Ignition off (memorisation of the throttle stops)

Start the engine without accelerating and let it run (without air conditioning) until the fan unit cuts
in (initialisation of the friction torque)
7. Replacing the fuel filter
7.1. Fuel tank unit module with integrated fuel filter
Special features :

The fuel filter cannot be separated from the fuel tank unit module

Filtering capability : 8 to 10 microns

Replacement intervals : No programme of replacement
7.2. Procedure : Pressurising the fuel supply circuit
Engines fitted with an injection rail without fuel return.
First procedure :

Erase the faults

Test the fuel pump actuators 2 times ; Using a diagnostic tool
N.B. : An actuator test lasts +10 seconds.
Second procedure :

Erase the faults

Switch off the ignition

Depress the accelerator pedal fully

Switch on the ignition

Hold the pedal fully down (for +1 second) : The fuel pump operates for between 10 and 30
seconds

Switch off the ignition after the fuel pump stops
8. Procedures for returning under warranty : Injection ECU
Disconnecting the injection ECU leads to it being automatically locked.